BS EN ISO 9151:2016

What is ISO 9151-Determination of heat transmission on exposure to flame for protective clothing about?  

ISO 9151 is an international standard on protective clothing against heat and flame that discusses the determination of heat transmission on exposure to flame for protective clothing to ensure protection against health and flame at the workplace.  

ISO 9151 specifies a method for determining the heat transmission through materials or material assemblies used in protective clothing.  

Under ISO 9151 the materials may then be ranked by comparing heat transfer indices, which indicate the relative heat transmission under the specified test conditions. The heat transfer index should not be taken as a measure of the protection time given by the tested materials under actual use conditions. 

Who is ISO 9151-Determination of heat transmission on exposure to flame for protective clothing for? 

ISO 9151 on the determination of heat transmission on exposure to flame for protective clothing is useful for: 

• Protective clothing manufacturers 
• Protective clothing test personnel 
• Occupational health and safety departments 
• Quality assurance departments 

Why should you use ISO 9151-Determination of heat transmission on exposure to flame for protective clothing?  

Heat transmission through clothing is determined by its thickness including any air gaps trapped between adjacent layers. The air gaps can vary in different areas of the same clothing assembly. 

ISO 9151 provides you with apparatus, precautions, sampling, conditioning, testing atmospheres, test procedures, and much more. 

The methods and procedures provided by ISO 9151 assist in the determination of heat transmission on exposure to flame for protective clothing, improve the performance and quality of protective clothing, and ensure reduction in the risk of injuries to workers due to heat and flame hazards.  

With obedience and compliance to ISO 9151, you can enhance the efficacy of protective clothing and manufacture a standardized product. 

What is changed since the last update?  

BS EN ISO 9151:2016 supersedes ISO 9151:1995, which is withdrawn. BS EN ISO 9151:2016 has made some technical changes compared to the previous edition ISO 9151:1995. These include: 

• Two alternative methods for constructing the calorimeter are described with additional information on the figures. Additional instructions are given for inserting the calorimeter into the mounting block, and the total mass of the calorimeter and mounting block is specified 
• Tolerances for the dimensions of machined parts have been added to text and drawings where required 
• The specified relative humidity and temperature ranges for the conditioning and testing atmospheres have been changed 
• Additional procedures for calibration and stabilization of thermocouple temperature, including a procedure to check on the linearity of the thermocouple output during regulation of the incident heat flux density, have been added